Difference between revisions of "ER-ADSR-555-01"

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* Drive with [https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-sequencer/ Erica Synths EDU Sequencer]  
 
* Drive with [https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-sequencer/ Erica Synths EDU Sequencer]  
 
** GATE Out output
 
** GATE Out output
 +
** At slowest speed, ~2Hz
 
* Using 1 M linear pots instead of 2.2M log pots
 
* Using 1 M linear pots instead of 2.2M log pots
 
** A, D, r pots should have been log pots
 
** A, D, r pots should have been log pots

Revision as of 11:14, 5 November 2022

Eurorack ADSR Module

ER-ADSR-555-01 Set.png

Features

  • Attack-DeCay-Sustain-Release Eurorack ADSR Module
  • Takes in Gate signal, generates CV to VCA
  • Attack, decay, and release pots control speed
    • Attack, decay, and release times can range from 200ms to 16s
  • Sustain pot sets the sustain voltage level
  • LED dims to level
  • 3U tall, 6 HP wide
  • 555 Based design
  • Benjie Jiao MiniADSR
    • Original was based on Barry Klein design
    • As built by schmitzbits design - "The Fastest Envelope in the West"
  • Benji's build has a three card stack-up and is 4 HP wide
  • This card is wider but uses 2 cards

Rev 1 Checkout

  • Drive with Erica Synths EDU Sequencer
    • GATE Out output
    • At slowest speed, ~2Hz
  • Using 1 M linear pots instead of 2.2M log pots
    • A, D, r pots should have been log pots
    • Controls are are "touchy"
    • Sustain pot is linear as it should be and "works" but is backwards
  • ADR series resistors are 220 Ohms but should be 100 Ohms per schmitzbits note
  • C3 is 4.7 uF
  • Does not have 1M that is dashed line on schmitzbits schemativ
  • ADSR controls
    • A pot full CW
    • D pot full CW
    • S Pot mid
    • R pot full CW

ER-ADSR-555 CAP 001.png

Benjie Jiao - DIY Modular Video

Issues

Rev 1 Issues

  • Silkscreen has "DELAY" should be "DECAY"

Assembly Sheet

ER-ADSR-555-01 Rev 1 Assembly Sheet